Sahih al-Bukhari 62:93
Narrated Muhammad:
Anas bin Malik said, "The head of Al-Husain was brought to 'Ubaidullah bin Ziyad and was put in a tray, and then Ibn Ziyad started playing with a stick at the nose and mouth of Al-Husain's head and saying something about his handsome features." Anas then said (to him), "Al-Husain resembled the Prophet more than the others did." Anas added, "His (i.e. Al-Husain's) hair was dyed with Wasma (i.e. a kind of plant used as a dye).
Reference
Sahih al-Bukhari 62:93
In-book reference
Book 62, Hadith 93
Arabic Text
حَدَّثَنِي مُحَمَّدُ بْنُ الْحُسَيْنِ بْنِ إِبْرَاهِيمَ، قَالَ حَدَّثَنِي حُسَيْنُ بْنُ مُحَمَّدٍ، حَدَّثَنَا جَرِيرٌ، عَنْ مُحَمَّدٍ، عَنْ أَنَسِ بْنِ مَالِكٍ ـ رضى الله عنه ـ أُتِيَ عُبَيْدُ اللَّهِ بْنُ زِيَادٍ بِرَأْسِ الْحُسَيْنِ ـ عَلَيْهِ السَّلاَمُ ـ فَجُعِلَ فِي طَسْتٍ، فَجَعَلَ يَنْكُتُ، وَقَالَ فِي حُسْنِهِ شَيْئًا. فَقَالَ أَنَسٌ كَانَ أَشْبَهَهُمْ بِرَسُولِ اللَّهِ صلى الله عليه وسلم، وَكَانَ مَخْضُوبًا بِالْوَسْمَةِ.